US9721423B2 - Event-based gaming operation for gaming device - Google Patents

Abstract

Embodiments of the present invention are directed to gaming devices and gaming systems that are configured to implement event-based gaming operations. Here, a gaming device includes a game event list that has game outcomes associated with each entry in the game event list. The game event list is generated before game play on the gaming device by selecting general game outcome types or specific game outcomes for each of the entries in the game event list. During game play, a game counter is incremented to a next entry in the game event list and an associated game outcome is displayed on the gaming device during the gaming event.

Description

RELATED APPLICATIONS

This application is related to U.S. patent application Ser. No. 12/980,990, filed Dec. 29, 2010, entitled MEANS FOR CONTROLLING PAYBACK PERCENTAGE OF GAMING DEVICE and U.S. patent application Ser. No. 12/981,091, filed Dec. 29, 2010, entitled MEANS FOR ENHANCING GAME PLAY OF GAMING DEVICE. The disclosures of the above-listed applications are incorporated herein by reference in their entirety for all purposes.

FIELD OF THE INVENTION

This disclosure relates generally to gaming devices, and more particularly to event-based gaming operation for gaming devices.

BACKGROUND

Typically game results of gaming devices are determined by analyzing a series of random selections associated with the game. For example, in spinning reel slot machines, a reel-stop position for each reel is randomly selected. Once each random selection is made, the combination of randomly selected reel-stop positions is analyzed to determine if the combination of symbols associated with the reel-stop positions results in an award for the player. Similarly, in video poker or blackjack random cards are selected and then analyzed to see if the combination of randomly selected cards results in an award for the player.

The process of making a series of random selections and then analyzing the results of these selections imposes several limitations both in the capabilities of gaming devices and the design of the games on the gaming devices. For the game devices themselves, the above process relies on multiple random selections in order to arrive at a specific outcome, which often makes for a very skewed distribution timelines for some awards and bonuses. Additionally, this conventional process limits the flexibility of the machine in awarding specific outcomes resulting from other triggering events. In the slot machine example, a random number must be used for each reel to determine which reel stop or stops are to be displayed on a game outcome display. With this conventional technique, large awards, for example, may hit on average only once every 10,000 games and secondary bonus games may hit, for example, once every 75 games on average. Due to the random nature of the determination process, however, the large award may still not have hit 100,000 games after the last time it hit. The bonus, on the other hand, may hit two times in a row and then not hit again for 250 games. Players are aware of the volatile nature of gaming devices; however, a player that experiences a long losing streak or a long streak with no significant wins may get frustrated and leave. Even if a player is not aware that a bonus may hit, for example, every 75 games on average, the player may expect the bonus or another significant award to occur periodically to stem the continued reduction of credits on the games credit meter from placing repeated wagers on the gaming device.

For demonstration purposes, certain reel stop combinations can be programmed into the game logic to illustrate a particular bonus or jackpot win. However, during actual game play in which a player is wagering on the outcome of the gaming device, the game outcomes are often limited by the combination of randomly selected reel stops; thereby limiting the ability to dictate certain symbol combinations displayed on the reels in response to triggering events. This dictation of certain symbol combinations may be desirable to alter the payback percentage of the gaming devices, provide bonuses to the players, or guarantee that certain gaming events happen within a given time frame.

In addition, during the design of a gaming device having spinning reels, it is often difficult to obtain multiple exact payback percentages for a given gaming machine because of the limitations involved in assigning values to each reel stop and/or setting up reel strips. For mechanical spinning reel games, reel strips typically include twenty-two physical reel stops. Game designers may assign a certain number of virtual stops or paytable stops to each of these physical stops to allow large prizes to be given away less than once every 10,648 spins. This allocation of virtual stops can be challenging when attempting to meet multiple precise payback percentage paytables as well as difficult in setting hit frequencies of winning symbol combinations. For multi-line video slot games, more precise payback percentage paytables are easier to obtain, but it still is difficult to balance the desired hit frequencies of certain outcomes with dialing in the desired payback percentage for the entire game paytable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a system diagram illustrating various components of a gaming system according to embodiments of the invention.

FIG. 2 is a functional block diagram that illustrates an example gaming device that can be a part of the gaming system shown inFIG. 1.

FIG. 3A is a block diagram of an example machine interface device shown inFIG. 1 according to embodiments of the invention.

FIG. 3B is a block diagram of an example processor in the machine interface device illustrated inFIG. 3A according to embodiments of the invention.

FIG. 4 is a block diagram of an example bonus controller shown inFIG. 1 according to embodiments of the invention.

FIG. 5A is a flow diagram of a method of generating an event list for a gaming device according to embodiments of the invention.

FIG. 5B is a flow diagram of another method of generating an event list for a gaming device according to embodiments of the invention.

FIG. 6 is a flow diagram of a method of operating a gaming device using an event list according to embodiments of the invention.

FIG. 7 is a flow diagram of method of implementing bonus spins into an event list for a gaming device according to embodiments of the invention.

FIGS. 8A, 8B, 8C, 8D, 8E, 8F, 8G, and 8H are detail diagrams of a gaming device as it progresses through a game session controlled by an event list according to embodiments of the invention.

DETAILED DESCRIPTION

FIG. 1 is a system diagram illustrating various components of a gaming system according to embodiments of the invention. Referring toFIG. 1, thegaming system2 includes several gaming devices, also referred to as Electronic Gaming Machines (EGMs)10 that are connected to agaming network50 through various communication mechanisms.

In general, agaming network50 connects any of a number of EGMs10, or other gaming devices, such as those described below, for central management. Accounting and other functions may be served by a connectedserver60 anddatabase70. For example many player tracking functions, bonusing systems, and promotional systems may be centrally administrated from theserver60 anddatabase70. In some embodiments there may bemultiple servers60 anddatabases70, each performing different functions. In other embodiments functions may be combined and operate on a single or small group ofservers60, each with theirown database70 or combined databases.

Many of the EGMs10 ofFIG. 1 connect to thegaming network50 through a Machine Interface Device,MID20. In general, theMID20 is a multi-protocol interface that monitors communication between thegaming network50 and the EGM10. In a common embodiment, the MID20 communicates to the EGM10 through a standard gaming network port, using a standard gaming network protocol, SAS, which is well known in the gaming industry. Most modern games include at least one communication port, which is commonly a SAS port or a port for another communication protocol. TheMID20, along with its various functions and communication methods is described in detail with reference toFIGS. 3A and 3B below.

Other EGMs10 inFIG. 1 connect to thegaming network50 through abonus controller40, which may be coupled between thegaming network50 andgaming device10. Thebonus controller40 generally communicates through a non-SAS protocol, such as another well-known communication protocol known as GSA. GSA is typically carried over an Ethernet network, and thus thebonus controller40 includes an Ethernet transceiver, which is described with reference toFIG. 4 below. Because thebonus controller40 communication may be Ethernet based, aswitch30 may be used to extend the number of devices that may be coupled to thebonus controller40. Thebonus controller40 and/or theMID20 may create or convert data or information received according to a particular protocol, such as SAS, into data or information according to another protocol, such as GSA. In this way theMID20 andbonus controller40 are equipped to communicate, seamlessly, between anyEGM10 andgaming network50 no matter which communication protocols are in use. Further, because theMID20 andbonus controller40 are programmable, and include multiple extensible communication methods, as described below, they are capable of communicating withEGMs10 that will communicate using protocols and communication methods developed in the future.

Other games or devices on which games may be played are connected to the gaming network using other connection and/or communication methods. For instance, anEGM12 may couple directly to thenetwork50 without any intervening hardware, other than hardware that is built into theEGM12 to connect it to thenetwork50. Likewise, aplayer kiosk14 may be directly coupled to the gaming network. Theplayer kiosk14 allows players, managers, or other personnel to access data on thegaming network50, such as a player tracking record, and/or to perform other functions using the network. For example, a player may be able to check the current holdings of the player account, transfer balances, redeem player points for credits, cash, or other merchandise or coupons, such as food or travel coupons, for instance.

Awireless transceiver32 couples thegaming network50 to awireless EGM36, such as a handheld device, or, through a cell phone or other compatible data network, thetransceiver32 connects to acellular phone34. Thecellular phone34 may be a “smart phone,” which in essence is a handheld computer capable of playing games or performing other functions on thegaming network50, as described in some embodiments of the invention.

Thegaming network50 also couples to theinternet70, which in turn is coupled to a number of computers, such as thepersonal computer72 illustrated inFIG. 1. Thepersonal computer72 may be used much like thekiosk14, described above, to manage player tracking or other data kept on thegaming network50. More likely, though, is that thepersonal computer72 is used to play actual games in communication with thegaming network50. Player data related to games and other functions performed on thepersonal computer72 may be tracked as if the player were playing on anEGM10.

In general, in operation, a player inserts a starting credit into one of the games, such as anEGM10. TheEGM10 sends data through its SAS or other data communication port through theMID20 and/orbonus controller50 to thegaming network50.Various servers60 anddatabases70 collect information about the gameplay on theEGM10, such as wagers made, results, various pressing of the buttons on theEGM10, for example. In addition, the SAS port on theEGM10 may also be coupled, through theMID20 as described below, to other systems, such as player tracking systems, accounting, and ticketing systems, such as Ticket-In-Ticket-Out (TITO) systems.

In addition, theEGM10 accepts information from systems external to the EGM itself to cause theEGM10 to perform other functions. For example, these external systems may drive theEGM10 to issue additional credits to the player. In another example, a promotional server may direct theEGM10 to print a promotional coupon on the ticket printer of the EGM.

Thebonus controller40 is structured to perform some of the above-described functions as well. For example, in addition to standard games on theEGM10, thebonus controller40 is structured to drive theEGM10 to pay bonus awards to the player based on any of the factors, or combination of factors, related to theEGM10, the player playing theEGM10, particular game outcomes of the game being played, or other factors.

In this manner, the combination of thebonus controller40 andMID20 are a sub-system capable of interfacing with each of the EGMs on agaming network50. Through this interface, theMID20 may gather data about the game, gameplay, or player, or other data on theEGM10, and forward it to thebonus controller40. Thebonus controller40 then uses such collected data as input and, when certain conditions are met, sends information and/or data to theEGM10 to cause it to perform certain functions.

In a more detailed example, suppose a player is playing anEGM10 coupled to theMID20 and thebonus controller40 described above. The player inserts a player tracking card so thegaming network50 knows the player identity. TheMID20 also stores such identifying information, or perhaps stores only information that the player is a level-2 identified player, for instance. TheMID20 passes such information to thebonus controller40, which has been programmed to provide a welcome-back bonus to any level-2 player after he or she has played two games. Gameplay on theEGM10 continues and, after the player plays two games, thebonus controller40 instructs theEGM10 to add an additional 40 credits to theEGM10 as the welcome-back bonus. Such monitoring and control of theEGM10 can occur in conjunction with, but completely separate from any player tracking or bonusing function that is already present on thegaming network50. In other words, theserver60, when structured at least in part as a bonusing server, may be set to provide a time-based bonus of 10 credits for every hour played by the player of theEGM10. The above-described welcome-back bonus may be managed completely separately through thebonus controller40 andMID20. Further, all of the actions on theEGM10 caused by thebonus controller40 are also communicated to the standard accounting, tracking, and other systems already present on thegaming network50.

FIG. 2 is a functional block diagram that illustrates an example gaming device that can be a part of the gaming system shown inFIG. 1. Referring toFIG. 2, the illustratedgaming device100 is an example of theEGMs10,12 that are shown inFIG. 1. TheseEGMs10,12 may include all types of electronic gaming machines, such as physical reel slot machines, video slot machines, video poker gaming devices, video blackjack machines, keno games, and any other type of devices may be used to wager monetary-based credits on a game of chance. As mentioned above, various other types of gaming devices may be connected to the network50 (FIG. 1) such aswireless gaming devices36, computers used forgaming purposes72,cellular phones34, multi-player gaming stations, server-based gaming terminals, etc.

Returning toFIG. 2, the illustratedgaming device100 includes acabinet105 to house various parts of thegaming device100, thereby allowing certain components to remain securely isolated from player interference, while providing access to player input/output devices so that the player may interact with the gaming device. The securely housed components include thegame processor120,memory110, andconnection port130. Thegame processor120, depending on the type ofgaming device100, may completely or partially control the operation of the gaming device. For example, if thegaming device100 is a standalone gaming device,game processor120 may control virtually all of the operations of the gaming device and attached equipment. In other configurations, thegame processor120 may implement instructions generated by or communicated from a remote server (e.g.,server60 shown inFIG. 1) or other controller. For example, thegame processor120 may be responsible for running a base game of thegaming device100 and executing instructions received over thenetwork50 from a bonus server or player tracking server. In a server-based gaming environment, thegame processor120 may simply act as a terminal to perform instructions from a remote server that is running game play on thegaming device100.

Thememory110 is connected to thegame processor120 and may be configured to store various game information about gameplay or player interactions with thegaming device100. This memory may be volatile (e.g., RAM), non-volatile (e.g., flash memory), or include both types of memory. Theconnection port130 is also connected to thegame processor120. Thisconnection port130 typically connects thegaming device100 to a gaming network, such as thegaming network50 described above. Theconnection port130 may be structured as a serial port, parallel port, Ethernet port, optical connection, wireless antenna, or any other type of communication port used to transmit and receive data. Although only oneconnection port130 is shown inFIG. 1, thegaming device100 may include multiple connection ports. As described above, in many existing gaming devices, thisconnection port130 is a serial connection port utilizing a SAS protocol to communicate to one or more remote game servers, such as player tracking servers, bonus servers, accounting servers, etc.

The player input/output devices housed by thegaming cabinet105 include agame display130, abutton panel140 having one ormore buttons145, aticket printer150, a bill/ticket reader170, acredit meter175, a playerclub interface device160, and one ormore game speakers195. Various gaming devices may include fewer or more input/output devices (e.g., a game handle, a coin acceptor, a coin hopper, etc.) depending upon the configuration of the gaming device.

Thegaming display130 may have mechanical spinning reels, a video display, or include a combination of both spinning reels and a video display, or use other methods to display aspects of the gameplay to the player. If thegaming display130 is a video display, the gaming display may include a touch screen to further allow the player to interact with game indicia, soft buttons, or other displayed objects. Thebutton panel140 allows the player to select and place wagers on the game of chance, as well as allowing the player to control other aspects of gaming. For example, some gaming devices allow the player to press abutton145 to signal that he or she requires player assistance. Other buttons may bring up a help menu and/or game information. Thebuttons145 may also be used to play bonuses or make selections during bonus rounds.

Ticket printers150 have relatively recently been included on most gaming devices to eliminate the need to restock coin hoppers and allow a player to quickly cash-out credits and transfer those credits to another gaming device. The tickets can also typically be redeemed for cash at a cashier cage or kiosk. The ticket printers are usually connected to the game processor and to a remote server, such as a TITO server to accomplish its intended purpose. In gaming devices that have more than one peripheral device, and which include only a single SAS port, the peripheral devices all share communication time over theconnection port130.

Another peripheral device that often requires communication with a remote server is the playerclub interface device160. The playerclub interface device160 may include a reader device and one or more input mechanisms. The reader is configured to read an object or indicia identifying the player. The identifying object may be a player club card issued by the casino to a player that includes player information encoded on the card. Once the player is identified by a gaming device, the playerclub interface device160 communicates with a remote player server through theconnection port130 to associate a player account with thegaming device100. This allows various information regarding the player to be communicated between thegaming device100 and the player server, such as amounts wagered, credits won, and rate of play. In other embodiments, the card reader may read other identifying cards (such as driver licenses, credit cards, etc.) to identify a player. AlthoughFIG. 2 shows the reader as a card reader, other embodiments may include a reader having a biometric scanner, PIN code acceptor, or other methods of identifying a player so as to pair the player with their player tracking account. As is known in the art, it is typically advantageous for a casino to encourage a player to join a player club since this may inspire loyalty to the casino, as well as give the casino information about the player's likes, dislikes, and gaming habits. To compensate the player for joining a player club, the casino often awards player points or other prizes to identified players during game play.

Other input/output devices of thegaming device100 include acredit meter175, a bill/ticket acceptor170, andspeakers195. Thecredit meter175 generally indicates the total number of credits remaining on thegaming device100 that are eligible to be wagered. Thecredit meter175 may reflect a monetary unit, such as dollars, or an amount of credits, which are related to a monetary unit, but may be easier to display. For example, one credit may equal one cent so that portion of a dollar won can be displayed as a whole number instead of decimal. The bill/ticket acceptor170 typically recognizes and validates paper bills and/or printed tickets and causes thegame processor120 to display a corresponding amount on thecredit meter175. Thespeakers195 play auditory signals in response to game play or may play enticing sounds while in an “attract-mode,” when a player is not at the gaming device. The auditory signals may also convey information about the game, such as by playing a particularly festive sound when a large award is won.

Thegaming device100 may include various other devices to interact with players, such as light configurations, top box displays190, andsecondary displays180. Thetop box display190 may include illuminated artwork to announce a game style, a video display (such as an LCD), a mechanical and/or electrical bonus display (such as a wheel), or other known top box devices. Thesecondary display180 may be a vacuum fluorescent display (VFD), a liquid crystal display (LCD), a cathode ray tube (CRT), a plasma screen, or the like. Thesecondary display180 may show any combination of primary game information and ancillary information to the player. For example, thesecondary display180 may show player tracking information, secondary bonus information, advertisements, or player selectable game options. The secondary display may be attached to thegame cabinet105 or may be located near thegaming device100. Thesecondary display180 may also be a display that is associated withmultiple gaming devices100, such as a bank-wide bonus meter, or a common display for linked gaming devices.

In operation, typical play on agaming device100 commences with a player placing a wager on a game to generate a game outcome. In some games, a player need not interact with the game after placing the wager and initiating the game, while in other games, the player may be prompted to interact with thegaming device100 during game play. Interaction between the player and thegaming device100 is more common during bonuses, but may occur as part of the game, such as with video poker. Play may continue on thegaming device100 until a player decides to cash out or until insufficient credits remain on thecredit meter175 to place a minimum wager for the gaming device.

Communication between gaming devices, such as those described above, and other devices on gaming systems2 (FIG. 1) is becoming increasingly more complex. The below-described system illustrates a system and method of communication on modern and future gaming systems.

FIG. 3A is a block diagram of aMID200, which may be an example of theMID20 described with reference toFIG. 1 above. TheMID200 includes a set ofprocessors210, which in this example are termed SAS processors. These SAS processors are capable of accepting, manipulating, and outputting data on a SAS protocol network.

TheMID200 is capable of communicating using other communication protocols as well, as described below. Eachprocessor210 is structured to couple to two Electronic Gaming Devices (EGDs). EGDs may include, for example, gaming devices such asEGM10 ofFIG. 1, or other electronic gaming devices. In the illustrated embodiment, eachSAS processor210 includes two ports, A and B, each of which may be coupled to an EGD. In turn, the two ports A and B are attached to a set of physical connectors, illustrated here as asingle connector240 for convenience of explanation. Each section of thephysical connector240, delineated by dotted lines, includes three separate pairs of communication lines. Each pair of communication lines is illustrated as a single line—a first serial pair labeled EGD, a second serial pair labeled SYS, and a third communication pair that uses two-wire communication, labeled TWI. Note that each of the ports A and B of theSAS processor210 includes all three communication pairs. Additionally each of the sections of thephysical connector240 includes wires for a voltage and ground reference, though not depicted inFIG. 3A. In an embodiment of theMID200 with fourSAS processors210, thephysical connector240 includes up to eight sections, each of which may be embodied by a separate, standard, RJ-45 connector to couple to a matching RJ-45 port in the connectedEGM10, or EGD, as determined by the specific implementation.

As illustrated inFIG. 3A, the first serial pair of Port A couples to EGD. The second serial pair may be coupled to external devices connected to the EGD, as needed. Specifically, some serial data protocols, such as SAS, do not allowEGMs10 to interface with multiple external devices over a single serial communication path. Such external devices may include, for example, player tracking systems and accounting systems. If aparticular EGM10 is already connected to such a system, and thus its SAS port is “full,” theMID200, and in particular aSAS processor210, may insert itself “between” the connected system and theEGM10 by using both of the serial pairs in a particular port of theSAS processor210 to couple to theEGM10 and the other connected system, respectively. In operation, theMID200, through therespective SAS processor210, passes any information directed from the external device coupled to the SYS communication lines in a particular port to the EGD of the same port, or vice-versa, in real time and without interruption. For example, polls, requests for information, and transmission of information are passed from a connected player tracking system, through the SYS lines of Port A to the serial line EGD of Port A. Only a small communication delay is added using such a communication system, which is well within the tolerance limits of SAS protocol. As a result, both theEGM10 and external system behave as if theMID200 were not present.

Further, the third communication pair, a two-wire interface labeled TWI, presents opportunity for expansion to future systems installed on theEGM10, or a new EGM, so that any data may be communicated between theEGM10 and theMID200. The TWI may be connected to card readers, top boxes, ticket dispensers, lighting panels, etc. that are coupled to or work in conjunction with anEGM10.

Besides simply passing information between communication interfaces, theMID200 also generates information directly for connected EGDs, which may originate from theMID200 or from another device as described below. In such a case theSAS processor210 sends the appropriate data through its appropriate serial line or two-wire interface directly to the desired EGD. Then the EGD may send its own data to its connected peripheral.

Referring back toFIG. 3A, theMID200 additionally includes acommunication processor220, labeled as COMM processor. Thecommunication processor220 is coupled to each of theSAS processors210, a program/debug circuit230, and to a bonus controller40 (FIG. 1). In practice, thecommunication processor220 may be embodied by a small microprocessor, such as the Atmel ATXMEGA256A3, which is readily available to developers, or any other processor or system capable of performing the desired communication functions.

Thecommunication processor220 collects and aggregates information from the EGDs that are coupled to each of theSAS processors210 and sends the aggregated information to thebonus controller40 ofFIG. 1. In some embodiments thecommunication processor220 is coupled to thebonus controller40 through an Ethernet interface. The communication processor is structured to parse information from Ethernet data packets and collect it for use by other systems within theMID200. Because Ethernet is an addressed protocol, by which messages may be sent to a particular Ethernet address, thecommunication processor220 also includes an address of the Ethernet device in aMAC ID222.

Thecommunication processor220 may also accept information from thebonus controller40, or other connected devices, and pass such information to the EGDs coupled to theSAS processors210. The information may include data, instructions, or commands, for instance.

Amemory224, which may be, for instance Ferroelectric Random Access Memory (FRAM) capable of retaining stored contents for over 10 years may be used by the communication processor for both program and data storage. Of course, other memory technologies may be used instead of or in addition to FRAM.

A program/debug circuit230 in theMID200 connects to thecommunication processor220 as well as to each of theSAS processors210. During manufacture of theMID200, the programming functions of the program/debug circuit230 load program code to each of theSAS processors210 as well as thecommunication processor220. This initial loading may take place through a program/debug communication port. Further, the program codes stored in each of theSAS processors210 and thecommunication processor230 may be updated through commands and data sent from an external device, such as thebonus controller40, through thecommunication processor220 to the program/debug circuit230. The program/debug circuit230 then formats the updated program data for each of theconnected SAS processors210 andcommunication processor220, and sends a command to each of the processors to be updated to load the new program code.

FIG. 3B is a block diagram of one of theSAS processors210 ofFIG. 3A, which shows additional detail of the SAS processor.

As described above, each of theSAS processors210 include two separate ports, Port A and Port B, illustrated here as separate ports of amicroprocessor260. Themicroprocessor260 in theSAS processor210 may be embodied by an Atmel ATXMEGA256A3, as described above.

Each of the ports of themicroprocessor260 is structured to couple to an EGD, which may be anEGM10 ofFIG. 1. Each port of themicroprocessor260 includes two serial connections, which in the example embodiment illustrated inFIG. 3B, are RS-232 ports common in the computing industry. The RS-232 ports are contained in an RS-232interface270,275, one for each port of themicroprocessor260. Each of theinterfaces270,275 includes two separate RS-232 ports, each of which uses a separate transmit and receive wire. Thus, eachinterface270,275 includes a total of four wires. It is convenient to include RS-232 ports as the preferred mode of communication because it is the standard interface for SAS ports of theEGMs10. Innon-standard EGMs10, such as very old or future devices that may not include SAS ports, communication ports other than RS-232 may be used simply by exchanging or updating the RS-232interfaces270,275. Another possibility is to include an RS-232 translator in anyEGM10 that does not include its own RS-232 interface. As illustrated inFIG. 3B, and as described above, the first of the serial connections, labeled EGD, is connected to an EGD for the particular port of themicroprocessor260, while the second serial connection, labeled SYS is connected to external devices that may be coupled to the particular EGD.

Additionally, and as described above, eachSAS processor210 includes two, two-wire interfaces, illustrated as a separate interface pair and labeled as TWI. In this embodiment, there is one pair for each port of themicroprocessor260. Each two-wire interface creates a bi-directional serial port that may be used for communicating with peripheral or expansion devices associated with the EGD of theparticular microprocessor260, or with other devices on thegaming system2 ofFIG. 1.

TheSAS processor210 includes amemory280 for storing instruction data of themicroprocessor260 as well as providing data storage used by the SAS processor. Thememory280 is preferably non-volatile memory, such as FRAM that is connected to themicroprocessor260 through a serial interface.

As described above, theSAS processor210 of the MIB200 (FIG. 3A) includes multiple connections to other components in theMIB200, which are illustrated in detail inFIG. 3B. Initially, eachSAS processor210 is coupled to each of theother SAS processors210 in theMIB200. In practice, this may accomplished by a direct connection, in which eachmicroprocessor260 is directly coupled to one another, or such connection may be an indirect connection. In an indirect connection, themicroprocessors260 of eachSAS processor210 is coupled to the communication processor220 (FIG. 3A). Any data or information to be shared betweenSAS processors210 is then originated by or passed through thecommunication processor220 to the other SAS processors.

Similarly, as described above, themicroprocessor260 of eachSAS processor210 is coupled to a program/debug circuit230 for initial or later programming. To communicate with eachSAS processor210 individually, each SAS processor is given an individual identification number, which may be set for themicroprocessor260 by tying particular data pins of the microprocessor to permanent low or high signals. Using binary encoding, n individual lines are used to identify 2n separate processors. A set of expansion pins couples to themicroprocessor260 of eachSAS processor210 so that each processor may determine system identification and revisions of theMIB200 and theconnected bonus controller40.

With reference back toFIG. 1, recall that thebonus controller40 couples to each of theMIDs200, and by extension to their coupled EGDs, such asEGMs10, and possibly to one or more EGMs themselves, to cause data and commands to be sent to the EGMs to control functions on each EGM.FIG. 4 is a detailed block diagram of such a bonus controller, according to embodiments of the invention.

Abonus controller300 ofFIG. 4 may be an embodiment of thebonus controller40 illustrated inFIG. 1. Central to thebonus controller300 is amicroprocessor310, which may be an Atmel AT91SAM9G20, which is readily available to developers. Themicroprocessor310 is coupled to one ormore memory systems320,325. Amemory system320 is a 2 Megabyte FRAM whilememory system325 is a 64 Megabyte Synchronous DRAM (SDRAM). Eachmemory system320,325 has various advantages and properties and is chosen for those properties. FRAM maintains its data autonomously for up to ten years, while SDRAM is relatively fast to move data into and out of, as well as being relatively inexpensive. Of course, the sizes and types of memory included in any bonus controller according to embodiments of the invention may be determined by the particular implementation.

Themicroprocessor310 also couples to a pair of card readers,340,345, which are structured to accept easily replaceable, portable memory cards, as are widely known. Each card reader may further include Electro-Static Discharge (ESD) devices to prevent damage to internal circuitry, such as themicroprocessor310, when cards are inserted or removed from thecard readers340,345. In practice, a card in one of thecard readers340,345 may store program code for themicroprocessor310 while a card in the other reader may store data for use by thebonus controller300. Alternatively a single card in either of thecard readers340,345 may store both program and data information.

Aport connector330 includes multiple communication ports for communicating with other devices. With reference back toFIG. 3A, the communication processor of eachMID200 couples to a connected bonus controller through such a communication port. Thecommunication port330 is preferably an Ethernet interface, as described above, and therefore additionally includes aMAC address331. Theport connector330 includes multiple separate connectors, such as eight, each of which connect to a single MID20 (FIG. 1), which in turn connects to up to eightseparate EGMs10. Thus, asingle bonus controller300 may couple to sixty-four separate EGMs by connecting through appropriately connected MIDs.

Further, asecond port connector335 may be included in thebonus controller300. The second port connector may also be an Ethernet connector. The purpose of thesecond port connector335 is to allow additionally connectivity to thebonus controller300. In most embodiments thesecond port connector335 may couple to anotherbonus controller300 or to other server devices, such as theserver60 on thegaming network50 ofFIG. 1. In practice, thesecond port connector335 may additionally be coupled to aMID20, thus providing thebonus controller300 with the ability to directly connect to nineMIDs20.

Yet further, Ethernet connections are easily replicated with a switch, external to thebonus controller300 itself, which may be used to greatly expand the number of devices to which thebonus controller300 may connect.

Because thebonus controller300 is intended to be present on agaming network50, and may be exposed to the general public, systems to protect the integrity of thebonus controller300 are included. Anintrusion detection circuit360 signals theprocessor310 if a cabinet or housing that contains thebonus controller300 is breached, even if no power is supplied to thebonus controller300. The intrusion detection circuit may include a magnetic switch that closes (or opens) when a breach occurs. Themicroprocessor310 then generates a signal that may be detected on thegaming network50 indicating that such a breach occurred, so that an appropriate response may be made. An on-board power circuit370 may provide power to thebonus controller300 for a relatively long time, such as a day or more, so that any data generated by theprocessor310 is preserved and so that theprocessor310 may continue to function, even when no external power is applied. The on-board power circuit370 may include an energy-storing material such as a battery or a large and/or efficient capacitor. Similar to themicroprocessor processor260 of theSAS processor210 described above, themicroprocessor310 of thebonus controller300 is additionally coupled to a program/debug port for initially programming themicroprocessor310 during production, and so that program and/or other data for the microprocessor may be updated through the program/debug port. In operation thebonus controller300 configures and controls bonus features on gaming devices through agaming network50 or through other communication systems. Bonus features are implemented through each gaming device's internal structure and capabilities, and may include integration with additional peripheral devices. Bonusing programs for the connected games may be introduced to thebonus controller300 by updating data stored in the memory systems directly on the bonus controller, or by inserting new memory cards in one or more of thecard readers340,345. Such a platform provides a facility for game developers, even third-party developers, to define and program new types of bonus games that may be used in conjunction with existing EGMs on existing gaming networks, or on new games and new networks as they are developed.

As discussed above, traditional approaches to designing game play on gaming devices include many limitations. Embodiments of the present invention are directed to gaming devices and gaming systems that are configured to implement event-based gaming operations. Here, a gaming device includes a game event list that has game outcomes associated with each entry in the game event list. In some embodiments, the game event list is generated before game play even begins on the gaming device by selecting general game outcome types or specific game outcomes for each of the entries in the game event list. During game play, a game counter is incremented to a next entry in the game event list and an associated game outcome is displayed on the gaming device during the gaming event.

As used in this application, the term “game event list” refers to a list or table that includes multiple entries to hold indications of game outcomes. This game event list may be stored in local memory at a gaming device, in a separate bonus controller that is used to direct at least some aspects of game play, or in a remote server or database that may be associated with either identified players or be associated with the game play occurring on the gaming device. Also in this application, when a “game outcome” is described as being in, written to, or otherwise associated with an entry in a game event list, the game outcome may refer to a generic type of game outcome, such as WINS or LOSSES, may refer to a specific game outcome, such as BAR BAR BAR, may refer to loss frequencies, such as 60%, or may refer to another aspect that is related to the ultimate display of a game outcome that is shown to the player on the game display.

There are many advantages of using game event lists over traditional game designing and playing methods. Some of these advantages include the ease of creating a paytable or paytables for a gaming device, the flexibility in introducing a variety of game play or bonus options, and the flexibility of customizing the game to a player or game condition. The discussion below is broken up into general sections to address different issues with event-based gaming. These sections are basics in game list generation, basics in game play with game event lists, and variations and advanced concepts that can be implemented with game event lists.

Game Event List Generation

At game initialization, a game event list is created. The list may be of any length and it is the list length, combined with the number of times a given event occurs within the list that determines the hit frequency of that event. In some embodiments, each entry in the game event list is a type of game outcome. For example, in one embodiment, there are only two types of entries in the game event list: WIN and LOSS. Bonuses and other features are also possible as game outcome types that can be included in other game event lists. However, these types of entries for game event lists are discussed below in the variation section.

For embodiments with only WINS and LOSSES in a game event list, the game event list provides a lot of flexibility in providing specific hit frequencies and payback percentages while being relatively easy to calculate. As discussed below, when playing a gaming device having a game event table, the WINS and LOSSES provide a type of game outcome that provides a guide for actual game outcome that is determined and displayed when a gaming event is initiated on the gaming device. In one example, suppose that a game designer wants to create a game with a 40% hit frequency and a 90% payback. Also, assume that the game designer decides to use a game event list with 10 entries or positions. Since a 40% hit frequency is desired, 4 out of the 10 entries will be WINS and the other 6 entries will be LOSSES. A resulting game list may resemble the list in Table 1 below.

TABLE 1
Example Game Event List

	ENTRY	GAME OUTCOME
	1	Outcome Type
	2	Outcome Type
	3	Outcome Type
	4	Outcome Type
	5	Outcome Type
	6	Outcome Type
	7	Outcome Type
	8	Outcome Type
	9	Outcome Type
	10	Outcome Type

With a desired hit frequency of 40% and a desired payback percent of 90%, the game designer can quickly calculate that the average pay of a WIN (or winning outcome) should be 2.25 (0.9/0.4). With this information, the game designer may develop the following paytable for the game as shown in Table 2 below.

TABLE 2
Base Game Example Paytable

		PAY FOR A
	PAYTABLE	WAGER OF 10
	XX XX XX	0
	XX XX CH	5
	AB AB AB	10
	1B 1B 1B	20
	2B 2B 2B	30
	3B 3B 3B	50
	7 7 7	100
	JP JP JP	1000
	AVG. PAY	22.5 (225%)

Here, average pay of the paytable may be achieved by weighting each paytable outcome that has an associated award or pay. During game play, the game event list may be populated with WIN and LOSS entries. A resulting game event list may resemble the list shown below in Table 3.

TABLE 3
Example Game Event List

	ENTRY	GAME OUTCOME
	1	LOSS
	2	WIN
	3	LOSS
	4	LOSS
	5	WIN
	6	LOSS
	7	LOSS
	8	LOSS
	9	WIN
	10	WIN

One method of generating a game event list according to embodiments of the invention is described below with reference toFIG. 5A.

Referring toFIG. 5A,flow400 begins withprocess405 where a game event list is initialized. Initializing a game event list may include defining a length or number of entries in a game event list. In the above example, the game event list was set at 10 entries. However, in other embodiments, the list size may be variable. A game designer or casino operator may define a maximum and/or minimum size for game event lists. Here, the length of the game list may be defined at the time that the game list is generated. Initializing a game event list may also include associating the game list with an identified player. For example, suppose that an identified player begins play on a particular game device. A game event list generated for the present game session may be associated with the player, and may be stored in a player database and associated with a player loyalty account for the identified player. Here, if the player stops play of the gaming device before the end of a game event list, the game list may be saved in the player database and retrieved the next time the indentified player plays the same or similar game. Initializing a gaming device may also include associating the game event list with a particular wager amount. As discussed below, associating a particular game event list with a particular wager may prevent players from varying wager sizes to take advantage of certain list distribution properties. A list pointer may also be initialized or set to point to a first position in the game event list.

After the game event list has been initialized, flow400 proceeds to process410 where a game outcome is selected for the first entry in the game event list. In the above example shown in Table 3, a LOSS outcome was selected for the first entry in the game event list. A list pointer may then be incremented so that it points to the next entry in the game event list inprocess415. In the above example, the pointer is incremented from 1 to 2 so that it points to the second entry in the game event list.

Inprocess420 it is determined if the pointer is pointing to the last entry in the game event list. Following the above example again, the pointer is pointing to the second entry, which is not the last entry in the game event list. If the pointer is not pointing to the last entry in the gaming event list, flow400 proceeds to process425 where another game outcome is selected for the list entry indicated by the pointer. Fromprocess425, flow400 proceeds back toprocess415 and repeatsprocesses415,420, and425 until all but one of the entries in the game event list are filled with game outcomes.

When it is determined that the pointer is pointing to the last entry in the game event list inprocess420, flow400 proceeds to process430 where a final outcome is selected for the last entry in the game event list. Inprocess435, the game event list is finalized. In this process, the game event list may be saved to particular location, such as in a memory section a gaming device, or in a player database location. Finalizing may also include checking the list for any errors, confirming that distribution conditions have been met, or implementing any bonuses into the game event list, such as bonus spins, as discussed below.

FIG. 5B is a flow diagram of another method of generating an event list for a gaming device according to embodiments of the invention.

Many of the processes in this alternate method shown inFIG. 5B are similar to processes described above forFIG. 5A. Hence, details about these similar processes will not be repeated. Referring toFIG. 5B,flow450 begins withprocess455 where a game event list is initialized. Inprocess460, the number of WINS and LOSSES are determined. In the above example, a 40% hit frequency has desired, which translated to 4 WINS and 6 LOSSES in the 10 entry game event list. In process465 a game outcome is selected for a first entry. Inprocess470, the WIN/LOSS counts are updated. In the above example, a LOSS was selected as the first entry. Hence, the WIN/LOSS counts would be updated to reflect that 4 WINS are still available and 5 LOSSES are still available to implement in the game event list.

The game pointer is incremented inprocess475 and it is determined whether the pointer is pointing at the last entry in the game event list inprocess480. If the pointer is not pointing to the last entry in the game event list, a game outcome is selected inprocess482. It is then determined whether this selected outcome meets the list conditions inprocess485. Here, it may be ensured that the selected game outcome does not violate a predefined list condition. For example, if there were no WINS left in the WIN count, a selected game outcome of another WIN would violate a condition for the game list. Additionally, if a distribution condition existed that specified that no more than 3 LOSSES could occur in a row, and a selected outcome was going to be the fourth LOSS in a row in a game event list,process485 would recognize that this selected game outcome violated a condition for the game event list.

If a selected game outcome does not meet the list conditions as determined inprocess485, flow450 returns to process482 to select a new game outcome. These processes are repeated until a selected game outcome meets the predefined conditions for the game event list. When the selected game outcome is determined to meet the list conditions inprocess485, flow450 proceeds to process488 where the selected outcome is entered into the game event list entry position indicated by the pointer. Flow450 then returns to process470, where the WIN/LOSS counts are updated.Processes470,475,480,482,485, and488 are repeated until all but one entry has been determined for the game event list.

Whenprocess480 determines that the pointer is pointing to a last entry in a game event list, flow450 proceeds to process490 where a final game outcome is placed in the last entry position in the game event list. In some embodiments, the last of the WIN/LOSS count outcomes may be directly placed into the last entry. In other embodiments, flow450 may include processes similar toprocesses482,485, and488 to select a final game outcome and ensure that the outcome meets the list conditions. The list is then finalized inprocess495.

In another method of generating a game event list, the known values of WINS and LOSSES may be implemented in a game event list and randomly shuffled to generate a filled game event list that is ready for game play. The steps of this process may be similar to those described inFIGS. 5A and 5B except that a random shuffle routine may be used to mix up the order of WINS and LOSSES.

The above game event list embodiments only determine game outcome types to put in the game event list. The actual game outcomes that are displayed to the player may be chosen at the time when a game event corresponding to an entry value is initiated by the player. However, in other embodiments, the winning outcome values or all outcome values may be determined and inserted into a game event list prior to game play as shown in Tables 4 and 5 below.

TABLE 4
Example Game Event List With Specific Win Outcomes

	ENTRY	GAME OUTCOME
	1	LOSS
	2	2B 2B 2B
	3	LOSS
	4	LOSS
	5	XX XX CH
	6	LOSS
	7	LOSS
	8	LOSS
	9	1B 1B 1B
	10	7 7 7

TABLE 5
Example Game Event List With Specific Outcomes

	ENTRY	GAME OUTCOME
	1	1B bb 2B
	2	2B 2B 2B
	3	bb bb 7
	4	CH 2B bb
	5	7 bb CH
	6	3B 7bb
	7	1B bb 3B
	8	7 7 bb
	9	1B 1B 1B
	10	7 7 7

Here, bb represents a blank or space in the reel strip. As shown in these Tables, actual game outcomes that are to be displayed during game play can be determined and implemented into the game event tables.

In yet other embodiments, game event lists may be generated with loss frequency values. Here, instead of game outcome types or specific game outcomes being implemented into a game event list, a probability value is inserted into the list that corresponds to the probability that a game outcome associated with a specific entry is a losing outcome (or the reverse could be done with winning frequency values). An example game event list may look list the one shown in Table 6 below.

TABLE 6
Example Game Event List With Loss Frequency Values

		LOSS FREQGAME
	ENTRY	OUTCOME
	1	60%
	2	90%
	3	10%
	4	50%
	5	60%
	6	90%
	7	90%
	8	5%
	9	10%
	10	45%

The values shown in Table 6 correspond to an overall hit frequency of 40% (or a loss frequency of 60%). Here, the loss frequency values influence, but do not predetermine game outcomes for each game played. For example, a 90% loss frequency value may typically lead to losses being received by the player (i.e., the player has a 1 in 10 chance of receiving a winning outcome when that corresponding entry in the game event list is played in a gaming session). On the other hand, a 5% or 10% loss frequency value may typically lead to wins. Loss frequency values may be determined using calculations and/or ranges in generating a game event list. Alternatively, predetermined sets of loss frequency values may be used and their values shuffled to generate game event lists with particular characteristics (e.g., low volatility or high volatility).

This leads to another advantage of using game event lists in game play. They are highly customizable to provide certain game play characteristics. For example, suppose that a game was designed so that it did not have 8 losses happen in a row. Conditions may be set on game event lists (assume the game event list had 100 entries or more) to prevent 8 losses from occurring in a row. Additionally, player characteristics may determine what customization is implemented. For example, suppose a particular player prefers highly volatile games. Conditions may be set that provide game event lists with a lower hit frequency, but with much larger pays for wins. These conditions may be designed and preset by a game designer or be dynamically implemented on a game when certain parameters are set by a casino operator, set by a player, or automatically set in response to a player's measured behavior while playing games. Since game event list generation is periodically occurring, creating a new type of game event list or modifying an exiting game event list is relatively simple to carry out.

Customization may also be used to entice newer players and make them feel comfortable on new games, reward players that very high wager amounts, or otherwise bonus certain players. Additionally, customization may be carried out for play at certain times of the day or certain days of the week. For example, higher payback percentage and lower volatilities may be implemented during weekday afternoons. Related co-pending application No. 12/XXX,XXX, entitled MEANS FOR ENHANCING GAME PLAY OF GAMING DEVICE discusses several different scenarios where customizing or personalizing a game session through bonus spins is desirable. Similar situations may be contemplated in customizing or personalizing game event lists.

When the game event list is exhausted (index or pointer reaches the end of the list) a new event list may be generated. Conditions and customizations may be carried over from a previous game event list or a process may be carried out to determine if any of these conditions or customizations should be modified. For example, if a particularly rich (high payback %) gaming event list is initially used for a new player, the end of the game event list may signal an end to the higher payback %. Hence, the new game event list generated for that player may use a different goal payback percentage. Weights within the paytable, hit frequency requirements, WIN/LOSS distributions, and other conditions may be modified to customize particular game event lists.

Since game event lists can predefine when wins will occur, at least over the length of the event list, players may try to take advantage of certain list characteristics. In some implementations, the event list will also contain bonus occurrences that are partly or fully funded by previous play. Thus, it may be necessary to prevent players from implementing a bet size strategy that gives them an edge. To ensure that this does not happens, a separate event list may be maintained for each game and each allowed bet size within that game.

For example, a game is implemented as a 1 cent denomination with six allowed wager sizes: 25, 50, 100, 200, 500 and 1,000 credits. Separate event lists are generated and maintained for each wager size (in this case, 6 event lists). Whenever a player switches from one bet size to another, they automatically switch from one event list to another.

Event List Game Play

Game play with a game event list may appear identical to traditional game play from a player's perspective. Theoretically, it provides the same values that traditional game player provides. However, the game event list provides some advance information about what may or will occur during game play. That is, game event lists provide game outcome types, actual game outcomes, or outcome influencing values that shape how a gaming session will unfold. In operation, the game play just proceeds down the entries of a game event list making any necessary calculations or determinations as needed. The list is implemented through use of an index or game counter, which is initialized to zero. When the next game is played, the index is incremented and the outcome held at the indexed location in the event table is executed. If an index begins at zero, its first incremented value is 1. The game then takes the outcome atposition1 and implements it. In the above example, in reference to Table 3, the first outcome is a LOSS. Here, the game device selects and displays a losing game outcome to the player.

On the next wager, the index is again incremented, and is now 2. That position on the event list contains a WIN. Now the game executes a routine to determine the winning outcome. This routine uses a weighted paytable, such as the paytable shown in Table 1, which contains any number of symbols and pay values. This paytable is not based on reel positions. It simply selects one of the pluralities of possible outcomes (symbols and value) in accordance with a predefined weighting of the likelihood of each outcome in relation to the others.

In this example, the list-base gaming method only executes the weighted paytable when a WIN event occurs and the pay determination must include the average number of wagers required for each WIN event. Here the hit frequency is 40%, which means a win occurs every 2.5 games played on average. The weighted paytable selects a payout value based upon a value of 2.5× the current wager. In embodiments where a specific game outcome is inserted into the game event table, the gaming device may simply display the value included in the game event list and not need to use the weight paytable. Note that the weighted paytable is used in the generation of the gave event list rather than during game play. In embodiments that use loss frequency values in the game event table, two routines may be carried out during game play. First, the loss frequency value may be used to determine if the game outcome is a WIN or a LOSS. Next, the weighted paytable is used to determine the actual value of a WIN outcome, while a losing outcome may be randomly or otherwise selected for a LOSS outcome.

FIG. 6 is a flow diagram of a method of operating a gaming device using an event list according to embodiments of the invention. Specifically,FIG. 6 refers to embodiments of a method of implementing an event list in game play that includes game outcome types, such as the game event list shown above in Table 3. However, similar processes may be used to implement game event lists that hold actual game outcomes or loss frequency values.

Referring toFIG. 6,flow500 begins by receiving a wager and game initiating input inprocess510. Inprocess512, the gaming device increments a game counter associated with the game event list. The gaming device then identifies a game outcome associated with a an entry in the game event list indicated by the game counter inprocess514. Inprocess516, the gaming device determines whether the identified game outcome is a winning outcome. If the identified game outcome is not a winning game outcome, the gaming device may select a losing outcome inprocess524 and display the selected losing outcome to the player inprocess526 as discussed above. If the identified game outcome is a winning game outcome, the gaming device selects a winning outcome from the weighted paytable inprocess518 and displays the winning outcome inprocess520 as discussed above. After either a winning or losing game outcome has been displayed to the player in either ofprocess526 or520, the gaming device may then wait for further player input inprocess528.

Game Event Variations

As mentioned above, one of the advantages of using game event lists is the ease of customizing them to influence game play. This can be accomplished, as discussed above, by manipulating distributions of outcomes on the game event list or changing characteristics of the game event list, such as hit frequencies, paytable weighting, or other conditions. Additionally, various other features may be implemented with game event lists to provide variations in game play, player bonuses, and payback percentage manipulations.

In one variation, loss insertions may be used to manipulate or fine tune payback percentages. Loss insertions are discussed in detail in co-pending application No. 12/XXX,XXX, entitled MEANS FOR CONTROLLING PAYBACK PERCENTAGE OF GAMING DEVICE. Here, losses may be inserted outside of typical game play to adjust payback percents or customize/personalize game play. With game event lists, loss insertions may be carried out independently of the game outcomes listed in the game event list. That is, a loss insertion determination may be done immediately when a game initiating input is received and prior to a game counter incrementing or a entry on a game event list examined. If the loss determination finds that a loss is to be added, a losing outcome is selected and displayed without changing anything in the game event table. In other embodiments, the game counter is incremented and the inserted loss replaces whatever outcome was indicated in the game event list.

Bonus spins are another type of feature that can be implemented in a game event list. Bonus spins are discussed in detail in the MEANS FOR ENHANCING GAME PLAY OF GAMING DEVICE co-pending application mentioned above. As discussed in that application, bonus spin systems can be used for both traditional game play, where outcomes are randomly selected for each gaming event that is initiated, or for event list based gaming outcomes where multiple game outcomes are selected prior to receiving game initiating inputs that ultimately correspond to the selected game outcomes. In either case, gaming machine operators want to configure overall payback % to match perceived marketing needs. With bonus spin systems instead of altering the weighted paytables and event list contents to account for the quantity and resolution of configuration options desired, bonus spins are implemented to personalize or customize gaming sessions.

In one example, a process begins with an event list being generated from a base game paytable. Returning to bonus spins, at the start of each game, rather than calling the event list processor directly, a bonus spin routine is first executed. This bonus spin routine may have a single binary output of TRUE or FALSE based on selecting a bonus spin value either randomly or from specified table and comparing that value to predefined criterion. For example, the predefined criterion may be a single input called True %, which determines how often the bonus spin routine returns a TRUE outcome as described above. Whenever the output of the bonus spin routine returns a value of FALSE, the outcome indicated in the game event list entry is executed using the base game paytable to determine a game outcome. However, when the output comes back TRUE, a winning outcome is selected from the win spin paytable and displayed. The Event List Processor remains undisturbed (i.e., its index does not increment). If the Weighted Paytable/Event List Processor pays 90% and the bonus spin paytable is set to 150%, the addition of the bonus spins may increase the overall payback percent to 95% or another value.

As mentioned in the event list application referenced above, one goal of an event list is to create more personalized experiences for players. In some embodiments, each player has their own event list so that the play of others does not trespass on their likelihood of winning. However, the bonus spin routines can be used to further personalize the uniformly created event list by adding winning free spins, bonuses, or other events. Additionally, the event lists can be manipulated in response to certain gaming conditions, such as the time of day or day of the week. For example, players of Platinum status may have more bonus spins than do players of Gold status. Further, players visiting during slow times may have fewer loss insertions and/or more free spin or bonus insertions than if the same player visited on New Year's Eve.

Below is an example of how bonus spins are placed in an event list. First, a list is populated with WIN and LOSS events exactly as discussed in the co-pending event list application referenced above:

TABLE 7
Example Game Event List

	ENTRY	GAME OUTCOME
	1	LOSS
	2	WIN
	3	LOSS
	4	LOSS
	5	WIN
	6	LOSS
	7	LOSS
	8	LOSS
	9	WIN
	10	WIN

A bonus spin is inserted by locating (through random or nonrandom means) a LOSS location that is followed by a WIN. Within this list that occurs atpositions1,4 and8. Suppose position8 is selected. Here's how the updated table looks:

TABLE 8
Example Game Event List with Bonus Spin Inserted

	ENTRY	GAME OUTCOME
	1	LOSS
	2	WIN
	3	LOSS
	4	LOSS
	5	WIN
	6	LOSS
	7	LOSS
	8	BONUS SPIN
	9	WIN
	10	WIN

When the index is8 and the BONUS SPIN event occurs, a loss is displayed exactly as if the event were a loss. Instead of ending the game at that point though, an audio-visual sequence is played to let the player know she's struck a bonus spin. This sequence can be simple or complex. This notification process may inform the player of the event while being dramatic and emotionally gratifying.

Once the sequence ends, the event list index is incremented (exactly as if another game were played but without deducting credits from the player's account) and the WIN at position9 is executed. In some embodiments, bonus spins do not create specific win types or values. Rather, in these embodiments, they simply cause the game to move from a LOSS event to a WIN event (with audio-visual animation between) without charging the player for what is effectively a free game.

FIG. 7 is a flow diagram of method of implementing bonus spins into an event list for a gaming device according to embodiments of the invention.Flow600 includes similar processes to flow400 shown inFIG. 5A. Similar processes will not, therefore, be described in detail here.

Referring toFIG. 7,flow600 begins withprocess605 where a game event is initialized. A first outcome is selected for an initial entry in a game event list inprocess610 and a pointer is incremented inprocess615. A determination about whether a pointer is pointing at a last list entry is made inprocess625, and game outcomes are selected for each table entry inprocess620 and the pointer incremented until all but a final entry in the game event list are filled. In process630 a final game outcome is selected for the last entry in the game event list.

After all of the entries in a game event list are filled,process631 determines is a bonus spin value is to be added to the game event list. If it is determined that a bonus spin is to be added to the game event list, flow600 proceeds to process632 where one of the game outcomes on the list is selected to be replaced by the bonus spin value. Here, particular conditions concerning implementation of a bonus spin are considered. For example, if a bonus spin can only replace a LOSS that precedes a WIN, only certain entries on the game event list may be selected to be replaced with a bonus spin. Once an outcome on the list is selected to be replaced inprocess632, the selected game outcome is replaced with a BONUS SPIN entry. If no bonus spin is to be added to the list as determined inprocess631, or a bonus spin has already been implemented into a game event list, flow600 proceeds to process635 where the game event list is finalized.

In an alternative implementation, the losing outcome is displayed along with an audio-video message or animation. Instead of an automatic respin, the player is given a free chance to spin again except that this free game's outcome is guaranteed to be a win. To make this clear, the “SPIN” button normally used to play the game may be reconfigured into a “WinSpin” button. In this alternative, the player is charged for the losing game—in other words the wager credit is deducted from the credit meter. But the next game—the bonus spin game—is played at the same bet size as the previous wager but the player is not charged for the game.

As discussed in the bonus spin application, each bet size may have its own bonus spin occurrence rate as specified by the casino at setup. Suppose this configuration value for each wager size is held in a variable called WSInc. In accordance with the example already described, the WSInc value for each wager size is as follows:

WSInc(25)=0

WSInc(50)=0.02

WSInc(100)=0.04

WSInc(200)=0.06

WSInc(500)=0.07

WSInc(1000)=0.08

At population time, the table length is multiplied by the appropriate WSInc value. If the table length is 10, and WSInc(200)=0.06, the result is a 0.6. That means 0.6 bonus spins are inserted into the event list for the 200 credit wager size. Of course, it is impossible to insert a fractional value. In this case, no bonus spins are inserted, but the fractional value is carried over to the next event list repopulation for that wager size, which in this case happens after the tenth game is played. An additional 0.6 bonus spins are added to the total, giving 1.2 bonus spins. In this case, one bonus spin is added to the event list and the 0.2 fraction is carried over to the next game.

Often it is important that a player's first experience with a new game be impressive so that the player associates that game with a positive experience. One way to make a first experience impressive is a winning streak. Since event lists, bonus spins and other such parameters are tracked by each individual player, we can insert additional bonus spins for the first sets of games a player plays. For example, if a player chooses to play a new game type, a number of bonus spins may be added so that the first X games pay 110%. Since bonus spins are effectively bonus payments, the base game paytables of the gaming devices do not have to be modified. After an introductory period, the bonus spin insertions may be removed or gradually decreased. Additionally, bonus spins could be added during a player's birthday or other events. In some embodiments, the rate of bonus spins may be increased when a player's loyalty to a game or casino appears to be fading.

In another implementation, a player's win frequency is increased by adding bonus spins for a period of time and/or skipping over LOSS outcomes in an event list without charging the player for the game. These techniques are useful for temporarily converting standard games into tournament games. In tournaments, a player is typically given a fixed number of games, or a fixed duration of play, during which the player accumulates as many credits as possible. These credits are not allowed to be cashed out and are good for no purpose other than establishing a score that is compared against other players. The highest scores usually wins cash prizes. One limitation for using traditional gaming devices as tournament games is the difficulty in changing out the pay tables of the game for the brief time a tournament lasts.

In one embodiment the bonus spin routine is created through software running on a computer such as a microprocessor. In another embodiment the bonus spin routine may be implemented in discrete logic, built using programmable logic or through other means. For purposes of this application, the bonus spin routine may include any mechanism in a game device or game system that allows for some control of typical game events. In some embodiments, the bonus spin routine may be directly implemented in the gaming device to control the payback percent on that gaming device. In other embodiments, the bonus spin routine may be implemented into a bonus controller (such as thebonus controller40 shown inFIG. 1) or other peripheral device connected to the gaming device that allows control over aspects of game play. In yet other embodiments, the bonus spin routine may be implemented on a remote server that has at least some control over game play on a connected gaming device.

Tournament games may also be easily created without the use of bonus spins. Here, the conditions and parameters for a game event list just have to be modified prior to the generation of the game event list that is to be used in tournament play.

Many other features may also be implemented in game event lists. Two examples of features that can be implemented are nudges and near win outcomes. This (and other) features may be directly implemented into a game event list and specify certain actions be taken when they are executed in the game event list. For example, consider the following game event list in Table 9 whose implementation is discussed with reference toFIGS. 8A-8H

TABLE 9
Example Game Event List with Nudges and Near Wins

	ENTRY	GAME OUTCOME
	1	LOSS
	2	NUDGE
	3	LOSS
	4	WIN
	5	NEAR WIN
	6	LOSS

FIGS. 8A, 8B, 8C, 8D, 8E, 8F, 8G, and 8H are detail diagrams of a gaming device as it progresses through a game session controlled by an event list according to embodiments of the invention.

InFIG. 8A, agaming device700 includes aplayer interface panel710 and agaming display720. Theplayer interface panel710 may include one or more game button and one or more game initiating input devices. Thegame display720 includes acredit meter721, three spinningvideo reels722 each with a number ofgame symbols723, and one ormore game buttons728. InFIG. 8A, a player has identified himself (John), inserted 500 credits on the game device, and placed a 10 credit wager. Thecredit meter721 reflects that a 10 credit wager has been placed and thevideo reels722 are currently spinning.

InFIG. 8B, a first game outcome is reached. Here, the game event list in Table 9 specifies that the game outcome is a LOSS. The game processor selects a losing outcome to display and thegame reels722 are stopped to show this selected losing outcome. InFIG. 8C, another 10 credits have been wagered and the game counter proceeds to the second entry in the game event list, which indicates a NUDGE is to be awarded. Here, as shown inFIG. 8C, a nudge symbol is direct to appear on the game display and be awarded to the player. The occurrence of a nudge symbol indicates that a player has now secured the ability to nudge the reels up or down to complete a winning symbol combination. In some embodiments, such as the one in this example, have a limited number of games that the awarded nudge can be used. In this case, the nudge must be used in 5 games.

InFIG. 8D, anudge meter730 appears and another game is played. As specified in the game event list, the game outcome is again a loss. Here, however, a nudge is available to the player should they choose to use it. Anudge indicator740 is displayed over agame reel722 that can be nudged upward to complete a winning symbol combination. Here, the player may nudge the first reel up to complete an “Any Bar” symbol combination win. Thenudge meter730 indicates that the player still has four more games to use the nudge bonus. Here, since an “Any Bars” win does not have a large award and because more games exist to use the nudge, the player declines, and plays another game as shown inFIG. 8E.

InFIG. 8E, the player has won a “Single Bar” combination. Here, the gaming event list indicated a WIN for a game outcome. The processor in the game device took this indication and used the weighted paytable to come up with the “Single Bar” win shown on the game display. Note that the nudge meter has also decremented and now only 3 games remain where the nudge can be used. InFIG. 8F, a NEAR WIN (sometimes called a near miss) is indicated in the game event list. Near wins may be implemented in a game event list to provide near win outcomes that entice a player to keep playing. They may also be implemented to ensure that a won NUDGE can be used. For example, a NEAR WIN may be automatically implemented within a NUDGE useful game range. In this example, a NEAR WIN would thus be implemented within the 5 games in the game event list after a NUDGE. InFIG. 8F, the NEAR WIN corresponds to a near win of “Double Bars.” Thenudge indicator740 appears over thecenter game reel722 to show the possible use of the stored nudge.

This time the player uses the nudge as shown inFIG. 8G. Here, the player moves thecenter reel722 up by swiping his finger in an upward motion over thecenter reel722 on thegame display720. The result of nudging the center reel up is a 50 credit win for the “Double Bar” symbol combination, which is reflected by thecredit meter721. InFIG. 8H, the player again receives a losing outcome as specified by the game event list shown in Table 9.

Some embodiments of the invention have been described above, and in addition, some specific details are shown for purposes of illustrating the inventive principles. However, numerous other arrangements may be devised in accordance with the inventive principles of this patent disclosure. Further, well known processes have not been described in detail in order not to obscure the invention. Thus, while the invention is described in conjunction with the specific embodiments illustrated in the drawings, it is not limited to these embodiments or drawings. Rather, the invention is intended to cover alternatives, modifications, and equivalents that come within the scope and spirit of the inventive principles set out in the appended claims.

Claims (14)

The invention claimed is:

1. A method of determining a plurality of game outcomes on electronic gaming machine, the method comprising:

determining a predefined number of wins and losses in a game event list having a predefined number of sequential entries;

initializing the game event list;

associating a pointer with the first entry in the game event list;

selecting a game outcome for the first entry in the game event list from a weighted pay table containing only winning outcomes when the first entry is a winning outcome and selecting a losing outcome when the first entry is a losing outcome;

selecting a game outcome for each subsequent entry in the game event list from the weighted pay table when the entry is a winning outcome and selecting a losing outcome when the entry is a losing outcome;

after each subsequent entry is selected, determining whether it would result in a predefined number of sequential losses in the game event list;

if it is determined that the subsequent entry does not result in the predefined number of sequential losses, entering it in the game event list;

if it is determined that the subsequent entry results in the predefined number of sequential losses, entering a winning game outcome in the game event list;

finalizing the game event list;

receiving value from a player for wagering on the electronic gaming machine via a bill acceptor associated with the electronic gaming machine;

validating via the acceptor one of a bill and a ticket received at the acceptor;

starting a first game on the electronic gaming machine in response to actuation of a game initiating input device by a player;

displaying the first entry in the game event list as the outcome of the first game;

for each subsequent game initiated by the player, displaying each subsequent sequential entry in the game event list as the outcome of each game played; and

cashing out value on the electronic gaming machine by printing a ticket on a ticket printer associated with the gaming machine.

2. The method ofclaim 1, further comprising repeating the steps of incrementing the pointer to a next entry in the game list and selecting a game outcome for the next entry in the game event list for all entries in the game event list.

3. The method ofclaim 1, wherein initializing a game event list includes erasing previously stored information for each entry in the game event list.

4. The method ofclaim 1, wherein initializing a game event list includes associating the game event list with an identified player.

5. The method ofclaim 4, wherein associating the game event list with an identified player includes associating the game event list in a portion of a player database associated with the identified player.

6. The method ofclaim 5 further comprising:

storing the game event list associated with an identified player in a database;

permitting the identified player to play through a portion of the list;

saving the list when the player stops playing; and

retrieving the list when the player resumes play.

7. The method ofclaim 6 wherein permitting the player to play through a portion of the list comprises permitting the player to play through a portion of the list on a first electronic gaming machine and wherein retrieving the list includes retrieving the list when a player resumes play on a second electronic gaming machine.

8. The method ofclaim 1, wherein initializing a game event list includes associating the game event list with a wager size.

9. The method ofclaim 1, wherein the game outcome types include at least one of a nudge game outcome, a bonus spin game outcome, and a near win game outcome.

10. The method ofclaim 1, wherein finalizing a game event list includes storing the game event list in a game memory.

11. The method ofclaim 1, wherein finalizing a game event list includes storing the game event list in a portion of a player database associated with an identified player.

12. The method ofclaim 1 further comprising:

after each subsequent entry is selected, updating a count of wins and losses currently in the game event list;

determining whether the predefined number of wins or losses has been entered in the game event list;

if the predefined number of wins has been entered, entering only losses for the remainder of the list; and

if the predefined number of losses has been entered, entering only wins for the remainder of the list.

13. A method of operating an electronic gaming machine to play a plurality of gaming events from a game event list having a plurality of entries that each comprise a combination of game outcome symbols, the method comprising:

receiving value from a player for wagering on the electronic gaming machine via a bill acceptor associated with the electronic gaming machine;

validating via the acceptor one of a bill and a ticket received at the acceptor;

receiving a first initiating input for a first gaming event;

non-randomly incrementing a game counter to indicate a first one of the plurality of entries in the game event list;

determining a first game outcome for the first gaming event that comprises a first combination of game outcome symbols in the indicated first entry;

displaying the first game outcome, including the first combination of game outcome symbols and any award associated therewith;

receiving a second initiating input for a second gaming event;

non-randomly incrementing the game counter to indicate a second one of the plurality of entries in the game event list;

determining a second game outcome for the second gaming event that comprises a second combination of game outcome symbols in the indicated second entry;

displaying the second game outcome, including the second combination of game outcome symbols and any award associated therewith; and

cashing out value on the electronic gaming machine by printing a ticket on a ticket printer associated with the electronic gaming machine.

14. The method ofclaim 13 wherein the electronic gaming machine is a slot machine having a plurality of spinning reels that each include a plurality of symbols and wherein the displayed game outcomes are symbols on a plurality of the reels.

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